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Projection Printing
Projection printing, keep away from mask damage entirely. An image of the patterns on the mask is projected onto the resist-coated wafer, which are many centimetres away. In order to achieve high resolution, only a small portion of the mask is imaged. This small image field is scanned or stepped above the surface of the wafer. Projection printers that step the mask image over the wafer surface are known as step-and-repeat systems. Step-and-repeat projection printers are able of approximately 1-micron resolution.
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The most common DC applications are: Electromagnets and yokes • Relays • Magnetic shields • Electrical measuring devices • Magnetic amplifiers
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Properties of good refractory material: The requirements of refractories for different furnaces and heating places depend on the working conditions. Nature of slag formed, maximum
There is an an assignment in your database named "Production of Chemicals from Coal" Do you have answers to this?
Production of Chemicals from Coal Coal has been considered a major component of U.S. energy reserves for a long time, and more recently it has become an important raw material
1. Discuss the relation between the structure and following properties of polymers a) Crystallinity b) Elasticity 2 . Explain the manufacture of Neoprene rubber. Menti
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